试验表明，三相功率平衡较好，各相功率因数较高。
The test shows that the balance of three phase powers is better and each phase of power factor is higher.
本文还对三相功率变换器的工作原理、原理框图以及检测数据进行了分析。
The working principle, principal block diagram, and the detecting records of the three-phase power converter are also analysed in this article.
电力系统无功功率补偿不足会引起功率因数下降，而三相功率不平衡则会影响到用电设备的安全。
The power factor of power system will be decreased by under-compensation of reactive power and it is harmful for the devices of customers while the power in the three phases are unbalanced.
在三相功率因数校正电路中，全解耦型电路由于其输入功率大，电气性能较好等优势特别适用于大功率场合。
Among the three-phase power-factor correction circuits, the full decoupling circuit is especially suitable for high power fields because of its high input power and good electrical performance.
本论文提出三相并联型有源滤波器的两种新的控制方法，即正弦波化控制和瞬时无功功率的控制方法。
In this paper, we propose and discuss two new control methods for three phase shunt APFs: the sinusoidal line current control method and the instantaneous reactive power compensation control method.
提出了一种零电流开关结构的单开关管的三相升压功率因数校正整流器。
Zero current transition (ZCT) topology of the single switch three phase boost power factor correction (PFC) rectifier is proposed.
介绍数字合成技术在三相精密功率信号源中成功地应用。
This paper introduces the successful application of digital synthesis technique to three phase precision power signal source.
论述了一种用于航空发电机测试用的三相馈能式电子负载功率拓扑方案及其电流控制策略。
Discussing a kind of power topological solution and its current control method of the three-phase energy feedback type electronic power load used in aero-generator testing.
介绍了在三相三开关高功率因数变换器中应用复杂可编程逻辑器件(CPLD)实现逻辑控制部分的方案。
This paper introduces a scheme in which a complex programmable logic device (CPLD) is used in the three phase three pole switch high rating factor convertor to realize logic control.
描述了一种在三相波形高度畸变的系统中可正确测量基波功率的方法。
A correct method for measuring the fundament component of power in a high distorted three phases system is described, Its cost is rather low.
本文针对三相不平衡负载特点，介绍了无功功率补偿原理和单板机控制系统。
In accordance with the feature of three phase unbalanced loads, this article describes the correction principle of reactive power and the control system of single board computer.
在三相系统中，以正序基波功率的积分作为计量标准，同样可以消除这两方面的不利影响。
These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.
为大功率三相交流电机的无触点控制提供一种方法。
It provides a method for the untouched switch Control for three - phase alternating current motor.
通过对三相异步电动机空载实验中遇见的故障——三相相间功率的极大不对称性进行分析。
Through analyzing the asymmetry about the power among three phase of the no-load experiments of the triphase asynchronous motor is designed.
最后给出额定功率为1.5KVA的三相静止变流器的试验波形和实验数据，试验结果表明该系统具有良好的动静态性能。
Finally, the experiment waveforms and data about 1.5kva three-phase static inverter are described and the results indicate that the system has excellent dynamic and static state performance.
本文简述了三相异步电动机运行中的效率、功率因数、负载率和功率的关系及各种节电措施。
This paper explained in brief the relation of three-phase asynchronous motor among efficiency, power factor, load rate and power and every power saving measures.
基于三相电压型变流器的无功功率补偿装置可以吸收或发出连续可调无功功率。
The three-phase voltage source converter can absorb and Issue continuously adjustable reactive power, based on reactive power compensator.
建立了对基于电压空间矢量pwm的三相高功率因数整流器实现电流稳态无差拍控制的设计准则。
Set up the circuit design criterion for the steady - stage deadbeat control to the line current of a three - phase high-power-factor rectifier based on voltage space-vector PWM.
本文从理论和实践方面探讨了矿用三相异步电机功率测量装置的设计及研制原理。
In this paper, principle of design and study of three-phase induction motor power measuring device is discussed in theory and practice.
对于无内置管的三相流重力热管，随着加热功率的增加，等效对流传热系数增大。
For the three-phase flow gravity heat pipe without built-in pipe, the equivalent convective heat transfer coefficient increases as the heating power increases.
为了提高大功率三相逆变电源系统运行的安全性、可靠性、可控性和自动化程度，设计其监控系统是必要的。
It is necessary to design the monitoring system of high-power three-phase inverter to improve its levels of safety, reliability, control and automation.
提出了三相电流型PWM整流器的一种新型实用的功率因数控制方法。
A new and practical power factor control strategy for three phase PWM current source rectifier was proposed.
考虑到系统功率较大，三相桥式功率变换器的每个开关器件均采用四个MOS管并联的结构。
For high power system, every switch of three-phase inverter is actually made up of four MOSFETs in Parallel.
从物理和数学的角度，对单相电路、三相电路瞬时有功功率和瞬时无功功率的概念进行了剖析。
From physical and mathematical points of view, this paper analyses the nature of instantaneous active and reactive power.
三相同步发电机作为三相工业频率的交流电源，研究其有功功率调节具有重要意义。
It's significant to study the regulation of active power of three-phase synchronous generator by way of the alternating power source of three-phase industrial frequency.
论述了利用瞬时无功功率理论从三相不对称电流中正确检测出三相正序有功电流，并用计算出的指令电流对系统进行补偿的原理。
Based on the instantaneous reactive power theory the method correctly detects the active positive-ord current from unsymmetrical currents and applies calculated command current to compensate system.
功率强劲的三相输出可免除人力盘车的难题。
Strong three-phase power output solves the trouble of hoisting the car by manpower.
实验表明，作为双馈感应发电机转子励磁电源的三相pwm变换器具有功率因数高、网侧电流谐波小、能量双向流等优点。
Experimental results show that three-phase PWM converters are advantageous in high power factor, small input-line current harmonic distortion and bi-directional power flow.
实验表明，作为双馈感应发电机转子励磁电源的三相pwm变换器具有功率因数高、网侧电流谐波小、能量双向流等优点。
Experimental results show that three-phase PWM converters are advantageous in high power factor, small input-line current harmonic distortion and bi-directional power flow.
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